Not sure what the 744 is like for flightdeck visibility but from the left seat of the 767/757 you can’t see the wing tip. You do develop a feeling for where the wingtip is but you are never sure. I am often surprised at how close in it is when being marshalled past an obstruction or into a tight parking spot which I guess is not a bad thing as I think I need more room than necessary. LHR has a warning on the ATIS to say that pilots are responsible for clearance in the runway holding area as wingtip clearance cannot be assured.